From 09b3761f566f266bbf359780240c006a6a7e0452 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C5=A0mrha=20Michal?= <msmrha@csas.cz>
Date: Fri, 6 Dec 2024 13:22:48 +0100
Subject: [PATCH] chore: move feedback logic to service

---
 .../quizmaster/quiz/QuizAnswerService.java    | 21 ++++++++++++++++
 .../quiz/QuizQuestionController.java          | 24 +++++++++----------
 2 files changed, 32 insertions(+), 13 deletions(-)

diff --git a/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizAnswerService.java b/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizAnswerService.java
index acd0c4b..3c03b1b 100644
--- a/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizAnswerService.java
+++ b/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizAnswerService.java
@@ -2,16 +2,23 @@
 
 import cz.scrumdojo.quizmaster.quiz.validation.PostQuizAnswerValidator;
 import org.springframework.stereotype.Service;
+import org.springframework.web.bind.annotation.RequestBody;
+
+import java.util.List;
+import java.util.Optional;
 
 @Service
 public class QuizAnswerService {
 
     private final QuizAnswerRepository quizAnswerRepository;
+    private final QuizQuestionRepository quizQuestionRepository;
     private final PostQuizAnswerValidator postQuizAnswerValidator;
 
     public QuizAnswerService(QuizAnswerRepository quizAnswerRepository,
+                             QuizQuestionRepository quizQuestionRepository,
                              PostQuizAnswerValidator postQuizAnswerValidator) {
         this.quizAnswerRepository = quizAnswerRepository;
+        this.quizQuestionRepository = quizQuestionRepository;
         this.postQuizAnswerValidator = postQuizAnswerValidator;
     }
 
@@ -25,4 +32,18 @@ public Integer addAnswer(Integer runId, Integer questionId, int[] answers) {
         return quizAnswerRepository.save(quizAnswer).getId();
     }
 
+    public MultipleAnswersResult getAnswerFeedback(Integer questionId, List<Integer> selectedAnswers) {
+
+        int[] answersArray = selectedAnswers.stream().mapToInt(Integer::intValue).toArray();
+
+        var wrongAnswersIndexes = quizQuestionRepository.findById(questionId)
+            .map(QuizQuestion.getWrongAnswersIndexes(answersArray))
+            .orElse(List.of());
+
+        var isAnsweredCorrectly = wrongAnswersIndexes.isEmpty();
+
+        return new MultipleAnswersResult(
+                    isAnsweredCorrectly,
+                    wrongAnswersIndexes);
+    }
 }
diff --git a/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizQuestionController.java b/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizQuestionController.java
index 0234cda..84c0706 100644
--- a/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizQuestionController.java
+++ b/backend/src/main/java/cz/scrumdojo/quizmaster/quiz/QuizQuestionController.java
@@ -16,10 +16,18 @@ public class QuizQuestionController {
 
     private final QuizQuestionService quizQuestionService;
 
+    private final QuizAnswerService quizAnswerService;
+
     @Autowired
-    public QuizQuestionController(QuizQuestionRepository quizQuestionRepository, QuizQuestionService quizQuestionService) {
+    public QuizQuestionController(
+        QuizQuestionRepository quizQuestionRepository,
+        QuizQuestionService quizQuestionService,
+        QuizAnswerService quizAnswerService) {
+
         this.quizQuestionRepository = quizQuestionRepository;
         this.quizQuestionService = quizQuestionService;
+        this.quizAnswerService = quizAnswerService;
+
     }
 
     @Transactional
@@ -47,20 +55,10 @@ public ResponseEntity<Boolean> answerQuestion(@PathVariable Integer id, @PathVar
     @Transactional
     @PostMapping("/quiz-question/{id}/answer")
     public ResponseEntity<MultipleAnswersResult> answerMultipleChoice(@PathVariable Integer id, @RequestBody List<Integer> answers) {
-        int[] answersArray = answers.stream().mapToInt(Integer::intValue).toArray();
-
-        var wrongAnswersIndexes = findQuestion(id).map(QuizQuestion.getWrongAnswersIndexes(answersArray)).orElse(List.of());
 
-        var isAnsweredCorrectly = wrongAnswersIndexes.isEmpty();
+        var result = quizAnswerService.getAnswerFeedback(id, answers);
 
-        return response(
-            Optional.of(
-                new MultipleAnswersResult(
-                    isAnsweredCorrectly,
-                    wrongAnswersIndexes
-                )
-            )
-        );
+        return response(Optional.of(result));
     }
 
     @Transactional